module.exports = (req, res, next) => {
    if(req.method == "POST" && req.path == "/login")
    {
        if(req.body.username == "jack" && req.body.password == "123456")
        {
            return res.status(200).json({
                user: {
                    token: "123"
                }
            })
        }else {
            return res.status(400).json({
                message: "用户名或者密码错误"
            })
        }
    }
    next();
}